JPH0730565Y2 - Slat conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a slat conveyor used for sorting packages in a warehouse or delivering packages at an airport or the like.

[Prior Art] In a slat conveyor, a large number of slat support members are fixed to the upper surface of an endlessly connected bogie, and rectangular synthetic rubber slats are mounted on the support members in the direction of travel of the conveyor. The rear end portion is arranged and fixed so as to overlap with the upper surface of the front end of the rear slat, and the trolley is driven by a drive device.

By the way, this type of conveyor is often used by traveling along a deformed traveling path such as an elliptical or T-shaped or a traveling path having heights. Therefore, in order to prevent slats from rattling at the corners and slopes and carrying out smoothly,
The slat support member is attached to the carriage so as to be tiltable in the front-rear direction and the left-right direction with respect to the transport direction.

That is, links and driving pushers are alternately connected endlessly to each dolly using cross pins, and slats are fixed to the upper surfaces of the links and pushers via a support member. The trolley to which the slat is attached travels by means of a caterpillar drive device arranged at one end of the traveling path.

[Problems to be Solved by the Invention] In the conventional slat conveyor, the cross pin connecting the link and the pusher is very expensive, which increases the cost of the entire conveyor.

In addition, since the slats are fixed to the chain connected using cross pins, the chains and slats can be tilted in the front-back direction and the left-right direction with respect to the vertical axis of the slats in the conveying direction of the conveyor. Since it cannot tilt to the left and right with respect to the horizontal axis,
There is a problem that it can not cope with the inclination at the corners of the conveyor that travels the curved runway in the incurable line, and that the load is applied to the slat support member when the conveyed product is placed by the left and right ends of the slat. .

The present invention has been made in order to eliminate the above-mentioned conventional problems, and an object of the present invention is to provide a slat conveyor which is inexpensive, easy to use, and can smoothly travel on all types of running paths. It is in.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the slat conveyor of the present invention has an endless connection of a number of carriages (4) having slats (5) on the upper surface thereof on a conveyor frame (3). Then, in the slat conveyor in which each trolley (4) is caused to travel by the drive device (6); the connecting shaft (20) is erected on the front part of the trolley body (7); the upper half part of the shaft (20) Is inserted into the connecting hole (14) at the rear end of the front bogie, and a spherical bearing (17) is provided in the connecting hole portion to connect the bogies to each other so as to be tiltable in the front-rear direction and the left-right direction; and the shaft (20).
An engaging roller (19) that engages with the drive device (6) by protruding the lower half part of the lower surface of the trolley;
Shafts (20A) (20A) are erected on the left and right of the front part of the trolley body to support a pair of grooved wheels (28) (28); on the other hand, opposite grooved wheels (28) in the conveyor frame (3). ) (28) near the outer tangent of the guide rail (33 which engages in the groove of the wheel and guides traveling of the carriage.
A) (33A) is provided.

In addition, each bogie body (7) has a substantially horizontal slat support portion (7B) and a base portion (7C) that extends through a slope portion (7A) formed in front of the slat support portion (7B). ) And a vertical plate (8) erected from the center of the slope (7A) to the center of the slat support (7B); the vertical plate (8)
Brackets (10) and (9) are provided at the upper and lower ends of the slat to attach the slats (5); connecting holes (12a) are provided at the ends of the slat support (7B) and the center of the front end of the base (7C).
A shaft (20) having the spherical bearing (17) common to the connecting hole (14) of the front stage truck main body and the connecting hole (12a) of the preceding stage truck main body by providing the connecting rings (12) and (11) having the (14) ) Is inserted; shafts (20A) (20A) for supporting the wheel with grooves are erected by forming holes (13) (13) at both ends of the base portion (7C) sandwiching the connecting hole (12a). It is characterized by having done.

[Operation] With the above configuration, in the slat conveyor of the present invention, the slats can be tilted in all directions with the spherical bearing, which is the connecting portion of the bogie main body, as the pivot point, so that not only the inclination in the longitudinal direction of the traveling path but also the left and right It also runs with a sufficient amount of inclination in the horizontal direction. Further, since the pair of grooved wheels pivotally supported on the upper surface of the bogie main body are engaged with the guide rails, the vehicle can travel smoothly.

[Embodiment] The present invention will be specifically described below based on the illustrated embodiment.

FIG. 1 is a plan view showing a slat conveyor of the present invention with a part omitted, and FIG. 2 is a sectional view taken along line II-II of FIG.

<Overall Structure>: The slat conveyor 1 is connected to a frame 3 arranged on the floor G via legs 2, and a multitude of connected carriages 4 each having a slat 5 on its upper surface and traveling in the frame 3. The drive device 6 for driving the trolley 4 to travel is a main member.

A shaft 20 for connection is erected on the front part of the trolley body 7, the upper half part of the shaft 20 is inserted into the connection hole 14 at the rear end of the front trolley, and a spherical bearing 17 is provided in the connection hole part. Trolleys are connected to each other so that they can be tilted back and forth and left and right (6th
Figure).

The lower half of the shaft 20 is projected from the lower surface of the trolley, and the engagement roller 19 that engages with the drive device 6 is attached. further,
Shafts 20A, 20A are erected on the left and right of the front part of the trolley body to support a pair of grooved wheels 28, 28, while the conveyor frame 3
Near the outer tangents of the grooved wheels 28, 28 facing each other in the inside, guide rails 33A, 33A having a circular cross section which are engaged with the grooves 28A, 28A of the wheels and guide the traveling of the carriage are arranged ( (Fig. 2).

<Truck main body> As shown in FIGS. 4 and 5, each trolley main body 7 extends with a substantially horizontal slat support portion 7B and a slope portion 7X formed in front of the slat support portion 7B. The base portion 7C is provided, and the vertical plate 8 is erected from the center of the inclined surface portion 7A to the center of the slat support portion 7B.

Brackets 10 and 9 are provided at the front and rear ends of the vertical plate 8 to attach the slats 5, and connecting rings 12 and 11 having connecting holes 12a and 14 at the ends of the slat supporting portion 7B and the center of the front end of the base portion 7C, respectively. And the shaft 20 having the spherical bearing 17 is inserted into the connecting hole 14 of the front-stage bogie body and the connecting hole 12a of the bogie body in common. Through holes 13, 13 are formed at both ends of the base portion 7C sandwiching the connecting hole 12a, and shafts 20A, 20A for supporting a wheel with a groove are provided upright. A pair of guide members 33, 33 are provided upright on the bottom surface of the frame 3, and the guide rails 33A, 33A are provided on the upper ends thereof.

<Slat> The slat 5 is a rectangular plate made of synthetic rubber, and the ends of the slats 5 are superposed on each other as shown in FIG. That is,
The front end side of the advancing direction of the slat 5 (indicated by an arrow in FIG. 3) is inserted into the lower surface of the rear end side of the front slat 5 and overlapped, while the rear end side is the upper surface of the front end of the slat behind the slat. After overlapping, a channel-shaped attachment piece 29 is arranged on the lower surface of each overlapped portion, and the overlapped portion is supported by the attachment piece 29 by using a pin 30 so that each slat can be angularly rotated in the horizontal direction. The attachment piece 29 is attached to the brackets 9 and 10 fixed to the vertical plate 8 of the carriage body 7 by using bolts 31 and nuts 32 (Fig. 5).

<Spherical Bearing> As described above, the shaft 20 having the spherical bearing 17 in common is inserted into the connecting hole 14 of the pre-stage bogie main body and the connecting hole 12a of the bogie main body. That is, the connecting ring 11 provided at the end of the front slat support portion 7B is located on the connecting ring 12 provided in the base portion 7C, and the spherical bearing composed of the outer race 15 and the inner race 16 is provided in the connecting hole 14 of the connecting ring 11. After mounting 17, insert the shaft 20. While mounting the washer 27 on the upper end of the shaft projecting from the connecting ring 11, the nut 21 is tightened, while the engaging roller 19 is attached to the shaft projecting downward from the connecting ring 12, each carriage 4 supports the spherical bearing 17 as a fulcrum. Is connected so that it can be tilted in all directions (6th
Figure).

The outer ring 22 of the engagement roller 19 attached to the shaft 20.
Is made of hard urethane in order to relieve shock when engaging with a drive device 6 which will be described later and to prevent noise from being generated. In FIG. 6, reference numeral 18 is a retainer, 23,
24 is a sleeve attached to the shaft 20, 25 is a ball bearing, and 26 is a retaining ring.

<Drive Device> Next, the drive device 6 for causing the carriage 4 to travel will be described.

The drive device 6 is arranged in the direct traveling path of the conveyor 1,
As shown in FIG. 8 and FIG. 8, it is composed of a drive motor M and a screw member 34.

The screw member 34 is arranged immediately below the frame 3 of the traveling path, is axially supported by bearings 36, 36 fixed to the upper surfaces of the support legs 35, 35, and is mounted on the tip of a shaft 37 and a burley 38 of the drive motor M. Drive pulley 39 and toothed belt mounted on the output shaft
It is connected with 40. Further, on the outer peripheral surface of the screw member 34, a screw groove 41 having a pitch of the mounting intervals of the engaging rollers 19 mounted on the lower surface of the carriage 4 is formed.
The engaging roller 19 of the dolly 4 is fitted to the. Then, when the screw member 34 is rotated, the engagement rollers 19 attached to the carriage 4 are sequentially fitted in the grooves 41 in the traveling direction, whereby the carriage 4 is
Runs.

<Operation> Next, the operation of the slat conveyor 1 of the present invention will be described.

When the drive motor M is operated, the screw member 34 connected by the toothed belt 40 rotates, the engaging roller 19 of the carriage 4 fitted in the groove 41 moves forward, and the succeeding rollers sequentially. 19 moves in the traveling direction while fitting in the groove 41. The dolly 4 runs in the traveling direction while being guided by the grooved wheels 28 attached to each dolly body 7 fitted to the guide rails 33A erected on the frame 3. When there is a difference in height on the traveling path or in the corner portion, since each bogie main body 7 is connected by the spherical bearing 17, the bearing portion tilts back and forth or left and right, which enables smooth traveling. Becomes

Although the front and rear ends of the slat 5 are wrapped with the front and rear slats in the above-described embodiment, the present invention is not limited to the conveyor having this structure, and the front and rear ends are wrapped like a crescent conveyor, for example. It is of course possible to apply it to a conveyor that does not allow it.

Furthermore, the present invention is not limited to the above embodiment,
It goes without saying that various modifications and design changes are possible without changing the spirit of the invention.

[Effects of the Invention] Since the present invention has the above-described configuration, the following effects are achieved.

Since the bogies supporting the slats are connected by spherical bearings, if the traveling path is inclined in the front-rear direction or the left-right direction, tilting the slats around the spherical bearings will cause the slats to move up and down and bend. It can cope well with the road. Further, since the dolly is connected by the spherical bearing, the cost can be significantly reduced as compared with the conventional one using the cross pin.

Further, when the trolley according to claim 2 is used, a pair of grooved wheels pivotally supported on the upper surface of the trolley body engages with the guide rails to run and exert a fall-prevention function. It is not necessary to separately install the wheels, the number of parts can be reduced, the structure can be simplified, and a conveyor that can be easily assembled and maintained can be provided.

[Brief description of drawings]

FIG. 1 is a plan view showing a slat conveyor of the present invention, and FIG.
The figure is a transverse cross-sectional view taken along line II-II of the above, FIG. 3 is an enlarged side view of the bogie, FIG. 4 is a plan view of the bogie main body, FIG. 5 is a side view of the same, and FIG. FIG. 7 is a partially cutaway front view of the drive unit, and FIG. 8 is a side view of the drive unit. 1: Slat conveyor, 2: Leg, 3: Frame, 4: Truck 5: Slat, 6: Drive device, 7: Truck main body, 7A: Slope portion 7B: Slat support portion, 7C: Base portion, 8: Vertical plate, 9, 10: Bracket 11, 12: Connection ring, 12, 12A, 13, 14: Through hole 15: Outer race, 16: Inner race, 17: Spherical bearing 18: Retainer, 19: Engaging roller, 20, 20a: Shaft 21: Nut, 22: Ring, 23, 24: Sleeve 25: Ball bearing, 26: Holding ring, 27: Washer 28: Grooved wheel, 28A: Groove, 29: Mounting piece, 30: Pin 31: Bolt, 32: Nut, 33: guide member 33A: guide rail, 34: screw member, 35: support leg 36: bearing, 37: shaft, 38: pulley, 39: drive pulley 40: toothed belt, 41: screw groove

Claims (2)

[Scope of utility model registration request] 1. A large number of carriages (4) having slats (5) on their upper surfaces are connected endlessly on a conveyor frame (3),
In a slat conveyor in which each trolley (4) is driven by a drive device (6), a connecting shaft (20) is erected at the front of the trolley body (7), and the upper half of the shaft (20) is placed at the front stage. It is inserted into the connecting hole (14) at the rear end of the trolley, and a spherical bearing (17) is provided in the connecting hole portion to connect the trolleys to each other so as to be tiltable in the front-back and left-right directions. Engagement roller (19) that engages with the drive device (6) by projecting the half part from the lower surface of the truck.
Further, the shafts (20A) (20A) are erected on the left and right of the front part of the bogie body to support the pair of grooved wheels (28) (28), while facing each other in the conveyor frame (3). Slat conveyors characterized in that guide rails (33A) (33A) that engage with the grooves of the wheels and guide the traveling of the carriage are disposed near the outer tangents of the grooved wheels (28) (28). . 2. A base body extending from each trolley body (7) with a substantially horizontal slat support portion (7B) and a slope portion (7A) formed in front of the slat support portion (7B) interposed therebetween. Part (7C),
The vertical plate (8) is erected from the center of the slope (7A) to the center of the slat support (7B), and the bracket (10) is provided at the upper and lower ends of the vertical plate (8).
(9) is provided to attach the slat (5), and a connecting ring (1) having connecting holes (12a) (14) at the end of the slat support (7B) and the center of the front end of the base (7C), respectively.
2) (11) is provided so that the spherical bearing (1) is commonly provided in the connecting hole (14) of the front-stage bogie body and the connecting hole (12a) of the bogie body.
Insert the shaft (20) having the hole (7) and insert holes (13) (1) at both ends of the base body (7C) that sandwich the connecting hole (12a).
3) to form a grooved wheel support shaft (20A) (20
The slat conveyor according to claim 1, wherein A) is provided upright.